Glass furnace



G. D. MAQ'E'LE GLASS FURNACE Filed Oct.

m@ 23, wm

Patented yAug-23, 1927.

GRnGoRYvnpMAN'rLn for' rrrrsnnizem rENNsYLvANIA, nssrGNonToMANTLn niv-` GINnnR-ING COMPANY,` on PITTSBURGH,rnNNsYnvANIA, afconronarroN or PENNSYLVANIA.

Grass FURNAGE. i

Application niedfofqtdper .8, mais.,fszeriarNo. 1403615.

lThis invention is for an y. improvement in' glass furnaces, andr more especially the smaller types ofcontinuousfurnaces adapted forspecial smallibatche's of 'glasslV andin# tended primarily tolreplace day tanks now commonly used. s f

. In continuousy furnaces of `thetype referred to, the furnaceis divided intermediate its length by a bridge wall so as tov form a melting chamber and a vworking chamber. Heat is provided Aby, burners located at the chargingv end of the melting chamber and a flueto recuperators is provided at the top of the furnace. at the working end of the l5 chamber through which the products of `combustion are removed. L

Considerable difficulty has been encoulr` tered in the use of these tanks, the circula* tion of allof ther/products of combustion comingdirectly overthe glass inthe working end of the chamber, and to this end. my invention proposes to provide for the protection of the working chamber while maintaining proper working temperatures f therein. The nature of the invention may be readily understood by reference to the accompanying drawings, which illustrate one embodiment of. my invention, and in which:

Figure 1 represents a longitudinal vertical section through a` furnace embodying .my invention. y' 'Y Figure 2 represents al transverse section in the plane of line II-II'of Figurey l. In the drawings, 2 designates the interior of a small furnace of the continuous type having a bottom 3, side walls 4, a top 5 which is preferably arched, a front or working end wall 6, anda rear or charging end wall 7. A charging opening of the usual type is provided in or adjacent the rear wall 7 .l The interior` ofthe furnace is divided intermediate itsends, and preferably ata point slightly past the middle towardA its front wall 6, by a bridge wall 8 of less height than the interior of the furnace sothat a gas circulating passage exists above this wall. Threats 9 are provided in the bridge wall adjacent the bottom.

The function of the bridge wall is to divide the interior of the furnace chamber below the desired level into a melting chamber l0 where the raw materials are melted as they fiovv toward the bridge wall and a or more burners are provided `in the' rear vwall 7, the holes for the burners being desig' nated 14. The products of combustion are removed from the interior of the furnace through a flue or stack opening` l'at the lworking end of the furnace. These in usual practice, are delivered toa recuperator atv this point. .h

n order to protect the glassy in the worin ing chamber, ll, I propose, according to the present invention, to provide, a closed Vre-` fractory arch 16 over ther working chamber and extending from the bridge wall tothe forward or working end wall 6 of the furnace. This arch, in effect, provides a mufn fle or circulating passage outside the Workingchamber by means ofr which a high temperature can `be ,maintained in the working chamber. without directly subjecting' the glass Ainr the chamber to the gases of combustion. This valso prevents the gases ofl combustion from escaping'through the working doors, and prevents vinterference with the circulation ofthe gases of combustionf by reason of air entering the working doors.

If necessary, auxiliary burners can be provided for the working end of the chamberunder the muffle wall or arch 16, ports for these burners being indicated at 17. These local or auxiliary burners provide fiexibilitygof temperature control and adiustmentof temperatures to meet local conditions while avoiding, the necessity for the entire mass of the products of combustion from flowing over the glass in the working chamber as has heretofore been the practice. K The advantagesof the present invention have already been indicated, these advantages i arising from the provision of L the archedmuffle-tile wall 16 and the provision of the burner passages 17.

While I have illustrated and described one preferred embodiment of my invention, it will be understood that the invention may be otherwise embodied and that various changes and modifications may 'be made therein within lthe contemplation of my inventionl p and under the scope of the` appended claims.

1. la ,continuous glass furnace havingY a bridge wall therein dividing the` vfurnace gin Y vof theufurnace adjacentthe flue.'A y

toa melting chambeiand a workingchamf" ber, the upper part of the interior of the furnace being continuously open to cir:

cu-lation of gases,'a partition extending from the bridge wall horizontaily over thewrking chamber,a flue in the furnace Vat the Working -enfd above the. partition and azfuel burner at the melting 4end ofthe furnace.`

'2. 'A glass furnace of' thecontinuousftype having `an elongated, rinterior chamber, a"

bridge wall intermediate ythe ends of the lchamber *transversely thereof for separating;

the furnace into meltinglendLand a work7 ing end, the upper-part of'the'chamber beking continuously opento the circulation of i gases therealon'g, Vabarner at .the `melting end ofthe furnace, an outlet iiue at 'the Workin end of the furnace, and 'a horizon-v tal partition extending from .the bridge Wall overJthe entire Working end lof the furnace;

A glass furnace ofthe continuous Itype having a meltingV chamber and a Workin chamber, algas circulating passage about at east a portion of the Working `ci'amb'er, and means for effecting the circr'tlationof gases of combustionl longitudinally of the furnace from "theme'lting "end to vthe Workworking end With ,which the mullie com#` municates. l l

5. glass furnace of Athefcontinuous Atype having a bridge "Wall inthe lower portionv thereof dividing the furnace into a melting chamber and a Working chamber, the upper part of the interior of the furnace being continuously open, a partition eXtendin' horizontally over the Working chamber, ysai partition y'being spaced below the top ,of lthe furnace, and an 'auxiliary `burner opening in thewvalls of the furnace at ithe Working end kthereof and belou7 thel -said `horizontal partition. p j

G. 'A vglass furnace of the continuous type having bottom, side, top land ye'nd Walls, a

bridge Wall Within `the furnace transverse.v

ly thereof, ".the top of 'the 'bridge Wall being below the top Wallfo'f Ithe' furnace whereby thespa'ce above the bridge Wallis opentothe circulation of gases through. the furnace,l aburner inone, end Wallvoffthe furnacefa-.ilueadjacent the 'other end Wall of the furnace and a horizontaly partition extending fram fthebridse Well t0. the @11d Wall 7. A glass furnace of.. thecontim;u0ll$i'type comprising an elongated Vfurnace structure having thelowver part of theinterior there- 'of divided bye bridge Wall-into a Working ofthe furnace, agii'jueatone end of the furnace,4 said furnace having `a vburner openm ing at the other end thereof.

i 8. glass furnace of the'continuous type comprising an relongated,furnace structure having the lower part of the interior thereof divided *by 'a bridge vWall into a working chamberhand a melting chamber, an arch over the Working chaniber'and below the-top of the furnace {Wlrere'by'v a circulating passage is 'provided throughout the length ofthe furnace, a flue at ,oneend lef the :fun nace, said furnace having ja "burnery opening at th'cothe-r end thereof, the furnace "also having a v'burner opening in the 'Working ch'z'rnber kthereof below the'said arch, ysaid workin-g chamber having working doors therein.'

4 glass furnace of the continnous'type liavingna ifi'i'elting'chaniber and a working chamber, said chambers being separated 'by a ln-idge Wall ofless height than the interior of vtlm `finnacejtvhereby the upper portion of theI furnace is'continuously open to the passage of.'gasestherethrough, said bridge Wall extending from a point close to the bottom o'f the .furnace vto a point Well above the normal glass level ofthe furnace, a partition extending horizontally over the Working chamber, and ya flue for inducing the flow of gases'jalong the top of the partition,

l0. glass furnace' of the 4continuous type havingfa melting chamber and a Working' chamber, said chambers 'fbeing'separa'ted by a bridge Wall of less height than-the interior of 'the furnace whereby the upper portion of thefu'rnace isfcontinuously v'open to the passage of gases Aftherethro'ugh, 4and v:a partition iextending -horizontallyover the working chamber, said Workingch'amber ibe- 4ing,provided with auxiliary heating lmeans. testimony whereof' I have hereunto set my hand. V

'y germeomf n; MANTLE. l 

